Terias Swainson, 1821

Zhang, Jing, Cong, Qian, Shen, Jinhui, Opler, Paul A. & Grishin, Nick V., 2021, Genomics-guided refinement of butterfly taxonomy, The Taxonomic Report of the International Lepidoptera Survey 9 (3), pp. 1-55 : 7

Terias Swainson, 1821 is a valid genus

Our genomic tree reveals that Eurema Hübner, [1819] (type species Papilio delia Cramer, 1780 , a junior homonym: valid name is Pieris daira Godart, 1819 ) is paraphyletic with respect to Pyrisitia Butler, 1870 (type species Papilio proterpia Fabricius, 1775 ) (Fig. 5). To restore monophyly, we choose to keep Pyrisitia as a genus and therefore treat the Old World clade currently placed in Eurema as a distinct valid genus. Terias Swainson, 1821 (type species Papilio hecabe Linnaeus, 1758 ) is its oldest available name.